Depressizona

Depressizona is a genus of small to minute sea snails, marine gastropod molluscs or micromolluscs in the superfamily Scissurelloidea.

Depressizona
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Vetigastropoda
Superfamily:
Scissurelloidea
Family:
Depressizonidae

Geiger, 2003[1]
Genus:
Depressizona

Geiger, 2003[1]
Type species
Depressizona exorum Geiger, 2003 (type by original designation)
Diversity[2]
2 species

Depressizona is the only genus within the family Depressizonidae.[2]

Depressizonidae was described as the subfamily Depressizoninae Geiger, 2003, in 2003. Then in 2005 it was considered to be a synonym of Scissurellinae in the family Scissurellidae according to the taxonomy of Bouchet & Roctoi (2005)[3] and it has also been placed in Scissurellidae.[4] In 2009 it was updated to the family level, Depressizonidae, when the second known species Depressizona axiosculpta was described.[2]

Species

Genus Depressizona contains two species only:

Description

The shape of the shell is calyptraeiform.

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References
  1. Geiger D. L. (2003). "Phylogenetic assessment of characters proposed for the generic classification of Recent Scissurellidae (Gastropoda: Vetigastropoda) with a description of one new genus and six new species from Easter Island and Australia". Molluscan Research 23(1): 21-83. doi:10.1071/MR02017, abstract. PDF.
  2. Geiger D. L. (2009). "A new species of Depressizona and the family rank of Depressizonidae". Zootaxa 2059: 57-59. abstract, full article.
  3. Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. Hackenheim, Germany: ConchBooks. 47 (1–2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
  4. Depressizona . Retrieved through: World Register of Marine Species on 11 April 2010.
  5. Depressizona axiosculpta Geiger, 2009. Retrieved through: World Register of Marine Species on 11 April 2010.
  6. Depressizona exorum Geiger, 2003. Retrieved through: World Register of Marine Species on 11 April 2010.
  • Geiger D.L. (2012) Monograph of the little slit shells. Volume 1. Introduction, Scissurellidae. pp. 1-728. Volume 2. Anatomidae, Larocheidae, Depressizonidae, Sutilizonidae, Temnocinclidae. pp. 729–1291. Santa Barbara Museum of Natural History Monographs Number 7.
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